Reception Device Polarization Processing Switching Unit
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Solution Overview
Problem
In optical transmission systems using polarization multiplexing and digital coherent technology, the reception device wastes calculation resources when receiving signals with only one polarization component, leading to decreased resource utilization and increased power consumption.
Innovation Solution
A reception device with a polarization processing switching unit that selectively routes the received signal to either a signal decoding unit or a polarization separation unit based on the modulation method, allowing for efficient processing of either one or both polarization components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the reception device always performs polarization separation processing on both polarization components, then it can handle various modulation formats (polarization multiplexing or single polarization), but calculation resources are wasted when only one polarization component is present, leading to increased power consumption and decreased resource utilization
Solution Approach 1:
The reception device dynamically adjusts its processing configuration based on the received signal characteristics. The determination unit identifies whether the signal uses polarization multiplexing or single polarization modulation, and the switching unit reconfigures the signal processing path accordingly - enabling polarization separation only when needed, thus adapting the system behavior to match the actual modulation format and avoiding unnecessary calculations
Solution Approach 2:
The patent applies different processing qualities to different polarization components based on their actual presence. When only one polarization component is detected, the device processes only that component with full quality, while disabling processing for the absent component, thereby optimizing resource allocation to match the actual signal structure
2Productivity
If the reception device performs polarization separation processing on both polarization components, then it can demodulate polarization-multiplexed signals, but calculation resources are wasted when receiving signals with only one polarization component
Solution Approach 1:
The device performs exactly the amount of polarization separation processing needed - neither more nor less. When the determination unit detects single polarization modulation, it disables polarization separation for the absent component, performing only partial processing (one component instead of two), thus avoiding excessive action and the associated resource waste while maintaining sufficient demodulation capability
3Device complexity
If the reception device uses a fixed processing configuration for all signals, then the device structure is simple, but it cannot efficiently handle both polarization multiplexed and single polarization signals
Solution Approach 1:
The reception device is designed with universal processing capabilities that can handle both polarization multiplexed and single polarization signals through the same hardware structure. The determination unit and switching unit enable the device to universally process different modulation formats by dynamically selecting the appropriate processing path, making the device multi-functional without requiring separate dedicated hardware for each format
Data Source
AI summary
A reception device includes a reception unit that receives a signal obtained by polarization multiplexing of an X polarized wave and a Y polarized wave, converts a received signal into a received signal corresponding to each of the X polarized wave and the Y polarized wave, and outputs the received signal, a first signal decoding unit that decodes one series of transmission signals from the received signal output by the reception unit, a polarization separation unit that performs polarization separation on the received signal corresponding to each of the X polarized wave and the Y polarized wave and output by the reception unit, a second signal decoding unit that decodes the received signal polarization-separated by the polarization separation unit, and a first polarization processing switching unit that captures a received signal corresponding to each of the X polarized wave and the Y polarized wave and output by the reception unit, and switches an output destination of the received signal that has been captured to one of the first signal decoding unit and the polarization separation unit on the basis of information indicating a modulation method.